(19)
(11) EP 2 797 340 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.12.2014 Bulletin 2014/50

(43) Date of publication A2:
29.10.2014 Bulletin 2014/44

(21) Application number: 14175939.9

(22) Date of filing: 09.03.2011
(51) International Patent Classification (IPC): 
H04R 3/00(2006.01)
 H04R 29/00(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 17.03.2010 US 725941

(62) Application number of the earlier application in accordance with Art. 76 EPC:
11157391.1 / 2369852

(71) Applicant: Harman International Industries, Incorporated
Northridge, CA 91329 (US)

(72) Inventors:
  • Mihelich, Ryan J.
    Farmington Hills, MI Michigan 48331 (US)
  • Hogue, Douglas K.
    Farmington Hills, MI Michigan 48331 (US)
  • Tackett, Jeffrey
    Allen Park, MI Michigan 48101 (US)

(74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser 
Leopoldstrasse 4
80802 München
80802 München (DE)

   


(54) Audio power management system


(57) An audio power management system manages operation of audio devices in an audio system. The audio power management system includes a parameter computer, a threshold comparator and a limiter. Audio signals generated with the audio system may be provided to the audio power management system. Based on a measured actual parameter of the audio signal, such as a real-time actual voltage and/or a real-time actual current, the parameter computer can derive estimated operational characteristics of audio devices, such as a loudspeaker included in the audio system. The threshold comparator may use the estimated operational characteristics to develop a threshold and manage operation of one of more devices in the audio system by monitoring the measured actual parameter, and selectively directing the limiter to adjust the audio signal, or another device in the audio system to protect or optimize performance.







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